Preparation of Hexagonal Plate-like ZnO Single-crystal Particles in the Presence of Anionic Amphiphiles

Shibata, Hirobumi; Iizuka, Yoshinobu; Kawai, Takayuki; Watai, Yoshito; Amano, Masato; Fujimori, Atsuhiro; Ogura, Taku; Hashimoto, Kazuaki

doi:10.5650/jos.ess20083

Cited by 6 publications

(3 citation statements)

References 23 publications

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“…The diffraction peaks of ZnO were observed in the XRD spectra of all samples 22,23) . The diffraction peak intensity of the (0 0 2) plane was remarkably higher than that of the other crystal planes because the addition of SHS suppressed crystal growth in the c-axis direction and facilitated crystal growth in the a-b-axis direction 16) . This indicated that the obtained samples had a high c plane orientation.…”

Section: Preparation Of Aunp/zno Composite Particlesmentioning

confidence: 96%

“…［Zn (OH) 4 ］ 2− was formed as an intermediate compound that decomposed as the reaction temperature increased and became a crystal growth unit for the ZnO particles (reaction 3) . The plate-like shape of the ZnO particles was the result of a change in the crystal growth rate owing to the adsorption of anionic surfactants on the c plane via electrostatic interactions 16) .…”

Section: Preparation Of Aunp/zno Composite Particlesmentioning

confidence: 99%

“…Therefore, controlling the particle shape is important to improve the photocatalytic activity. Recently, we reported the preparation of hexagonal plate-like ZnO single-crystal particles in the presence of an anionic surfactant 16) . However, although the photocatalytic activity is improved by shape control, ZnO has a wide bandgap and can function as a photocatalyst under UV-light irradiation 4) .…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and Photocatalytic Activity of Hexagonal Plate-like Shaped Au Nanoparticles/ZnO Composite Particles under Visible-light Irradiation

et al. 2022

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We synthesized Au nanoparticle (AuNP)/ZnO composite particles in presence of an anionic surfactant and evaluated their photocatalytic activity under visible-light irradiation. AuNPs synthesized from HAuCl 4 in the presence of amylase and the precursor solutions of ZnO were mixed, followed by a hydrothermal process, to synthesize crystal face-controlled AuNP/ZnO composite particles. X-ray diffraction (XRD) patterns and ultraviolet-visible (UV-Vis) spectra confirmed the formation of AuNP/ZnO composite particles. Furthermore, different Au to Zn concentration ratios in the precursor solutions resulted in different amounts of AuNPs in the composite particles. In addition, the average size of the AuNP/ZnO composite particles decreased with increasing Au to Zn concentration ratio. We believe AuNPs act as the nuclei for ZnO particle formation. The photocatalytic activity of the AuNP/ZnO composite particles was evaluated by the photodegradation of methylene blue (MB) under visible-light irradiation. The photodegradation rate of MB was higher with AuNP/ZnO composite particles compared to that with the ZnO particles synthesized in the absence of AuNPs. The AuNP/ZnO composite particles exhibit photocatalytic activity under visible-light irradiation owing to the enhanced charge separation efficiency and the localized surface plasmon resonance effect.

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Section: Preparation Of Aunp/zno Composite Particlesmentioning

confidence: 96%

Section: Preparation Of Aunp/zno Composite Particlesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis and Photocatalytic Activity of Hexagonal Plate-like Shaped Au Nanoparticles/ZnO Composite Particles under Visible-light Irradiation

et al. 2022

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Crystal growth of HAp on plate-like ZnO particles using APTES as surface treatment agents

Amano

Shibata

Hashimoto

2022

Journal of Asian Ceramic Societies

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Synthesis and characterization of ZnO nanoparticles prepared by green routes: controlling morphologies by maintaining pH

Sharma,

Singh,

Singh

et al. 2024

Phys. Scr.

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The synthesis of metal oxide semiconductor nanoparticles has attracted much attention in recent past. Nanoparticles are broadly used in solar energy conversion, catalysis, varistors, gas sensors, and non-linear optics, etc. Due to the large band gap properties zinc oxide nanoparticles are widely used in numerous applications. Zinc oxide nanoparticles have a wide band gap of approximately 3.3 eV. In this work, we have reported synthesis and characterization of ZnO nanoparticles having rod-like, spherical and flower-like structure. We have used zinc acetate dehydrate [Zn(CH3COO)2. 2H2O] and aqueous extract of Dahlia Pinnata leaves and deionized water. Dahlia Pinnata leaves extract has not been previously used to prepare ZnO NPs. It serves as reducing and capping agent. We have analyzed the presence of chemicals using FTIR, Raman and NMR spectroscopy techniques. It is found that the unique morphology of ZnO NPs flower like structures enhances its sensing properties in comparison to the spherical ones. We have used UV-vis-nir spectroscopy, X-Ray diffraction (XRD), Fourier Transform Infrared Microscopy(FTIR), and Scanning Electron Microscope (SEM) analysis and explore the opto-electronic properties of ZnO nanoparticles and have completed with it structural and morphological properties.

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Preparation of Hexagonal Plate-like ZnO Single-crystal Particles in the Presence of Anionic Amphiphiles

Abstract: Inc. was used for pH adjustment. 6.20 g of SHS was added to 45 ml of ion-exchanged water and stirred at 343 K for 2 h. The resulting SHS solution, which was adjusted to pH 12 using the ammonia solution, was mixed with 10 ml of 2 M aqueous ZnSO 4 solution

Cited by 6 publications

References 23 publications

Synthesis and Photocatalytic Activity of Hexagonal Plate-like Shaped Au Nanoparticles/ZnO Composite Particles under Visible-light Irradiation

Synthesis and Photocatalytic Activity of Hexagonal Plate-like Shaped Au Nanoparticles/ZnO Composite Particles under Visible-light Irradiation

Crystal growth of HAp on plate-like ZnO particles using APTES as surface treatment agents

Synthesis and characterization of ZnO nanoparticles prepared by green routes: controlling morphologies by maintaining pH

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